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https://issues.apache.org/jira/browse/NUTCH-2518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16385963#comment-16385963
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Sebastian Nagel commented on NUTCH-2518:
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It seems to affect all 25 occurrences of
{code:java}
int complete = job.waitForCompletion(true)?0:1;{code}
> Must check return value of job.waitForCompletion()
> --------------------------------------------------
>
> Key: NUTCH-2518
> URL: https://issues.apache.org/jira/browse/NUTCH-2518
> Project: Nutch
> Issue Type: Bug
> Components: crawldb, fetcher, generator, hostdb, linkdb
> Affects Versions: 1.15
> Reporter: Sebastian Nagel
> Priority: Critical
> Fix For: 1.15
>
>
> The return value of job.waitForCompletion() of the new MapReduce API
> (NUTCH-2375) must always be checked. If it's not true, the job has been
> failed or killed. Accordingly, the program
> - should not proceed with further jobs/steps
> - must clean-up temporary data, unlock CrawlDB, etc.
> - exit with non-zero exit value, so that scripts running the crawl workflow
> can handle the failure
> Cf. NUTCH-2076, NUTCH-2442, [NUTCH-2375 PR
> #221|https://github.com/apache/nutch/pull/221#issuecomment-332941883].
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